All versions of package jsgui-lang-essentials are vulnerable to Prototype Pollution due to allowing all Object attributes to be altered, including their magical attributes such as proto, constructor and prototype.
https://snyk.io/vuln/SNYK-JS-JSGUILANGESSENTIALS-2316897
https://github.com/metabench/jsgui-lang-essentials/issues/1
Source: Mitre, NVD
Published: 2022-05-01
Updated: 2026-06-17
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.00117